Malicious PDF — malware analysis report

Static analysis result for SHA-256 2098a37d788b4324…

MALICIOUS

PDF

32.9 KB Created: 2021-06-19 22:30:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1cb3475070042c88e7d59523f91947ac SHA-1: 84a3656389d6b56dca27ad362e1826d97ff8485d SHA-256: 2098a37d788b43243631fb5ae4f72a45c0c601cea26b1357aaf3743bedba7039
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs, many of which are part of a link farm designed to attract users searching for game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ML classifier strongly suggests maliciousness. The document body and extracted URLs point towards a lure for downloading game-related exploits or potentially unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/479516143/minecraft-beta-free-game-hack
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-gift-link-hack_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-free-spins-link-cheat_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-free-download_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-cheats-2021_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/tower-of-hell-roblox-hack-script_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-pc-hack-tool_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-34-4-hack-download_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-redeem-code-free_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-daily-free-spin-app_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/free-minecraft-accounts-2021_GM479516143.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-app-real_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/free-robux-no-verification-2021-android_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/robuxmatch-com-free-robux_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/how-to-get-free-outfits-on-roblox_GM431946152.pdf
    • https://hunting.beta.privatewaterfishing.com/userFiles/files/real-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fb4.bin
28034f22d6125a170056a5651ec91b2b09d293e1de99200b16fc29c8501fc517
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB4 21436 bytes
font_01_sfnt_off00005e9f.bin
93eaf246314330a04d19d7a2ad76ecc13e18bc21eade9aedb21d3f8ca46bad9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9F 18072 bytes